In study on the launching position for TV-command guidance missiles, we proposed an optimization method for lessening the optimizing space with multiple threats.The constraints of launching position were analyzed, and the dynamic and static threat models of the missile operational area were established.Then, the optimization guideline of launching position was put forwarded, and the optimization model was established.Numeric simulation was made based on particle swam optimization (POS).The simulation result proved the effectiveness of the model and method, which has great application value and is of important significance for the operational planning of missiles.